A larger handle on the Irwin 5 in. C-Clamp make it easier to apply torque for more clamping pressure with less hand fatigue. Designed with a double-threaded screw, the 5 in. clamp reduces screw deflection and drift for faster clamping and allows you to apply 50% more clamping force than others. Ideal for woodworkers, carpenters, welders, builders, or do-it-yourselfers, this Irwin was made to get the job done.